CN103024974A - Voltage induction type dimming control system and voltage induction type dimming control method thereof - Google Patents
Voltage induction type dimming control system and voltage induction type dimming control method thereof Download PDFInfo
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- CN103024974A CN103024974A CN2011102894560A CN201110289456A CN103024974A CN 103024974 A CN103024974 A CN 103024974A CN 2011102894560 A CN2011102894560 A CN 2011102894560A CN 201110289456 A CN201110289456 A CN 201110289456A CN 103024974 A CN103024974 A CN 103024974A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses a voltage induction type dimming control system and a voltage induction type dimming control method thereof. The voltage induction type dimming control system comprises a power supply circuit, wherein the power supply circuit comprises a power supply converter, an output current sensor, an input voltage sensor, and a feedback control circuit; the power supply converter is used for driving an illuminating device by a power supply; the output current sensor is used for sending the output current of the power supply converter to generate a sensing output current; the input voltage sensor is connected to the input end of the power supply converter and is used for sensing an input voltage of the power supply converter to generate a sensing input voltage; and the feedback control circuit is used for outputting a dimming control signal to control the switch handover of the power supply converter so as to regulate the output current of the power supply converter. According to the voltage induction type dimming control system, when the input alternating current voltage of a power supplier of a light emitting diode illuminating device changes within different voltage ranges, the power supplier of the light emitting diode illuminating device outputs different constant voltages or constant currents to the light emitting diode illuminating device so as to control the brightness of the light emitting diode illuminating device to achieve the function of regulating the brightness of the light emitting diode illuminating device.
Description
Technical field
The present invention relates to a kind of dimming control system, and be particularly related to a kind of voltage induced formula dimming control system and control method thereof that is applied to light emitting diode illuminating apparatus.
Background technology
In recent years because light-emitting diode (Light Emitting Diode, LED) breakthrough of manufacturing technology, so that the luminosity of light-emitting diode and luminous efficiency significantly promote, and light-emitting diode has the characteristics such as energy-saving and environmental protection, life-span length, thereby so that light-emitting diode replaces gradually fluorescent tube commonly used or bulb and becomes new lighting device, be widely used in application such as street lamp, home lighting device, car light, display floater backlight, traffic signal indicating lamp, indication looking board.
Existing road lighting generally adopts high pressure sodium lamp and applicable power supply circuit thereof to drive.For reaching energy-conservation purpose, except selecting dynamical light fixture, also can utilize the mode of implementing evening lamp to realize, also namely keep before at dead of night the normal illumination brightness of light fixture, but the vehicle that travels on because of road when the late into the night can be relatively less, can utilize the dropping equipment of civil power loop front end to provide lower voltage suitably to reduce the brightness of illumination of light fixture, to reach the purpose of energy-conservation and prolonging service lives of lamps.Yet, as to want directly to replace existing high-pressure sodium lamp with light emitting diode illuminating apparatus, light emitting diode illuminating apparatus and can't reach energy-conservation purpose because of it without dimming function except need use existing power supply circuit framework.
At present for reaching the function of light modulation, light emitting diode illuminating apparatus need to rely on a dimming control signal to come light emitting diode illuminating apparatus is carried out the light modulation operation, therefore light emitting diode illuminating apparatus just needs extra light adjusting controller, controls output current and the output voltage of the power supply unit of light emitting diode illuminating apparatus.Thus, light emitting diode illuminating apparatus just can't utilize existing power supply circuit framework, and sets up the cost increase that light adjusting controller will make integral body, and causes the design of circuit complicated.
Summary of the invention
The object of the present invention is to provide a kind of voltage induced formula dimming control system that is applied to light emitting diode illuminating apparatus, it can utilize the power supply circuit framework of existing street lamp and need not to increase light adjusting controller and can realize dimming function, and can reach at lower cost simple circuit just reach energy-conservation with prolong the lighting device effect in useful life.
For reaching above-mentioned purpose, the invention provides a kind of voltage induced formula dimming control system, in order to control the brightness of lighting device, this system comprises: power circuit comprises: power supply changeover device, in order to the power drives lighting device; The output current sensor is connected to the output of power supply changeover device, and output current of its detecting power supply changeover device is to produce the detecting output current; The input voltage sensor is connected to the input of power supply changeover device, and input voltage of its detecting power supply changeover device is to produce the detecting input voltage; And feedback control circuit, be connected to the control end of output current sensor, input voltage sensor and power supply changeover device, it is according to detecting output current and detecting input voltage, the output dimming control signal is adjusted the output current of power supply changeover device with the switching over of control power supply changeover device with this.Wherein, when feedback control circuit changes in first voltage range at the input voltage when power supply changeover device, output has the dimming control signal of the first state with the switching over of control power supply changeover device, so that the output current of power supply changeover device is first to decide electric current, and at feedback control circuit when the input voltage when power supply changeover device changes in the second voltage scope, the dimming control signal that output has the second state is with the switching over of control power supply changeover device, so that the output current of power supply changeover device is second to decide electric current.
For reaching above-mentioned purpose, the present invention provides a kind of voltage induced formula dimming control system in addition, and in order to control the brightness of lighting device, this system comprises: power circuit comprises: power supply changeover device, in order to the power drives lighting device; The input voltage sensor is connected to the input of power supply changeover device, and input voltage of its detecting power supply changeover device is to produce the detecting input voltage; And feedback control circuit, be connected to the output of power supply changeover device, output voltage with the detecting power supply changeover device is detected output voltage to produce, and feedback control circuit is connected to the control end of input voltage sensor and power supply changeover device, it is according to detecting output voltage and detecting input voltage, the output dimming control signal is adjusted the output voltage of power supply changeover device with the switching over of control power supply changeover device with this.Wherein feedback control circuit ties up to when the input voltage of power supply changeover device changes in first voltage range, output has the dimming control signal of the first state with the switching over of control power supply changeover device, so that the output voltage of power supply changeover device is first to decide voltage, and tie up to when the input voltage of power supply changeover device changes in the second voltage scope at feedback control circuit, the dimming control signal that output has the second state is with the switching over of control power supply changeover device, so that the output voltage of power supply changeover device is second to decide voltage.
For reaching above-mentioned purpose, the present invention provides a kind of voltage induced formula dimming control system again, and in order to control the brightness of lighting device, this system comprises: power circuit comprises: power supply changeover device, in order to the power drives lighting device; And feedback control circuit, be connected to output and the control end of power supply changeover device, producing feedback signal, and output feedback signal is to this control end of power supply changeover device with the output voltage of detecting power supply changeover device; And input voltage sensor, be connected to input and the control end of power supply changeover device, the input voltage of its detecting power supply changeover device is to produce dim signal to the control end of power supply changeover device, make the switching over according to dim signal and feedback signal control power supply changeover device of power supply changeover device, to adjust the output voltage of power supply changeover device; Wherein the input voltage when power supply changeover device changes in first voltage range, power supply changeover device is according to dim signal and feedback signal and to export output voltage be first to decide voltage, when the input voltage of power supply changeover device changes in the second voltage scope, power supply changeover device is according to dim signal and feedback signal and to export output voltage be second to decide voltage.
For reaching above-mentioned purpose, the present invention provides again a kind of voltage induced formula dimming control system, and in order to control the brightness of lighting device, system comprises: power circuit comprises: power supply changeover device, in order to the power drives lighting device; The output current sensor is connected to the output of power supply changeover device, and output current of its detecting power supply changeover device is to produce the detecting output current; And feedback control circuit, being connected to the control end of output current sensor and this power supply changeover device, producing feedback signal, and output feedback signal is to the control end of power supply changeover device according to a detecting output current for it; And input voltage sensor, be connected to input and the control end of power supply changeover device, the input voltage of its detecting power supply changeover device is to produce dim signal to the control end of power supply changeover device, make the switching over according to dim signal and feedback signal control power supply changeover device of power supply changeover device, to adjust the output voltage of power supply changeover device; Wherein the input voltage when power supply changeover device changes in first voltage range, power supply changeover device system exports output current according to dim signal and feedback signal be first to decide electric current, when the input voltage of power supply changeover device changes in the second voltage scope, power supply changeover device is according to dim signal and feedback signal and to export output current be second to decide voltage.
For reaching above-mentioned purpose, the present invention also provides a kind of voltage induced formula dimming controlling method, in order to control the brightness of lighting device, wherein lighting device system is by the power supply changeover device power supply of power circuit, control method comprises the following step: (a) output voltage or the output current of detecting power supply changeover device are maintained at the control output voltage of power supply changeover device or output current and decide voltage or to decide electric current; (b) variation of the input voltage that receives of detecting power supply changeover device; And (c) when changing in different voltage ranges according to input voltage, export the different output voltages of deciding voltage or the different output current of deciding electric current to lighting device.
Description of drawings
Fig. 1 is the calcspar of the voltage induced formula dimming control system of preferred embodiment of the present invention.
Fig. 2 is the calcspar of the voltage induced formula dimming control system of another preferred embodiment of the present invention.
Fig. 3 is the calcspar of the voltage induced formula dimming control system of the another preferred embodiment of the present invention.
Fig. 4 is the again calcspar of the voltage induced formula dimming control system of a preferred embodiment of the present invention.
Fig. 5 is that one of voltage induced formula dimming control system shown in Figure 4 changes example.
Fig. 6 is the flow chart of method of the control lighting device brightness of preferred embodiment of the present invention.
Fig. 7 is another flow chart of the method for control lighting device brightness shown in Figure 6.
Wherein, description of reference numerals is as follows:
Dimming control system: 10
Power circuit: 100
Power supply changeover device: 120
Feedback control circuit: 140
Output current sensor: 160
Input voltage sensor: 180
Voltage decoder: 190
Input ac voltage: V
In
Output dc voltage: V
Out
Output DC stream: I
Out
Dim signal: V
Dim
Embodiment
The exemplary embodiments that embodies feature ﹠ benefits of the present invention will be described in detail in the explanation of back segment.Be understood that the present invention can have in different aspects various variations, its neither departing from the scope of the present invention, and explanation wherein and graphic be when the usefulness that explain in itself, but not in order to limit the present invention.
Fig. 1 shows the calcspar of the voltage induced formula dimming control system of preferred embodiment of the present invention.As shown in the figure, voltage induced formula dimming control system 10 comprises power circuit 100, and wherein power circuit 100 comprises power supply changeover device 120, output current sensor 160, input voltage sensor 180 and feedback control circuit 140.Power supply changeover device 120 is with input ac voltage V
InConvert output dc voltage V to
OutWith output DC stream I
Out, to drive light emitting diode illuminating apparatus (not shown).Output current sensor 160 is connected in the output of power supply changeover device 120, in order to the variation of the output current of detecting power supply changeover device 120 and export a detecting output current.Input voltage sensor 180 is connected in the input of power supply changeover device 120, in order to the variation of the input voltage of detecting power supply changeover device 120 and export a detecting input voltage.Wherein, the excursion of input ac voltage Vin can be for example 110-277V
Ac Feedback control circuit 140 is connected to input voltage sensor 180, output current sensor 160 and power supply changeover device 120, it is used for receiving the detecting output current of output current sensor 160 and the detecting input voltage of input voltage sensor 180, and produce a dimming control signal according to detecting output current and detecting input voltage, and export this dimming control signal to the control end (not shown) of power supply changeover device 120, control switching over of power supply changeover device 120 with output voltage or the output current of adjustment power supply changeover device 120 with this, to reach the function of the brightness of adjusting light emitting diode illuminating apparatus.
According to conception of the present invention, light-emitting diode is a kind of light-emitting component of deciding current drives, and input ac voltage V
InThe source be generally civil power.Change and can bear broad voltage range from civil power in order to allow power supply changeover device 120 be fit to external voltages, the output of power supply changeover device 120 is then for to decide electric current or to decide voltage.And, power supply changeover device 120 output decide electric current/decide voltage can not be subjected to input ac voltage V
InVariation and influential.Therefore, power supply changeover device 120 can be the power supply unit of certain electric current, and it is exported a constant output current and comes the power drives light emitting diode illuminating apparatus.In this case, feedback control circuit 140 is set as at the detecting input voltage when changing in first voltage range, and the switching over of control power supply changeover device 120 is to allow the output current of power supply changeover device 120 decide electric current as first; And at the detecting input voltage when changing in the second voltage scope, the switching over of control power supply changeover device 120 is so that the output current of power supply changeover device 120 is second to decide electric current.For instance, as input ac voltage V
InAt for example 110-180V
AcFirst voltage range in when changing, it is low dimming control signal that feedback control circuit 140 can produce a state according to the detecting input voltage that receives, and export this state and be low dimming control signal to the control end of power supply changeover device 120, so that power supply changeover device 120 outputs first are decided electric current and light emitting diode illuminating apparatus are not carried out brightness adjustment control.As input ac voltage V
InAt for example 180-277V
AcThe second voltage scope in when changing, it is high dimming control signal that feedback control circuit 140 can produce a state according to the detecting input voltage that receives, and export this state and be high dimming control signal to the control end of power supply changeover device 120, so that power supply changeover device 120 outputs second are decided electric current and light emitting diode illuminating apparatus are carried out brightness adjustment control.
Fig. 2 shows the calcspar of the voltage induced formula dimming control system of another preferred embodiment of the present invention.Another feasible embodiment of the present invention is the power supply unit that power supply changeover device 120 can be certain voltage, and it is exported a constant output voltage and comes the power drives light emitting diode illuminating apparatus.In this embodiment, voltage induced formula dimming control system 10 comprises power circuit 100, and wherein this power circuit 100 comprises power supply changeover device 120, input voltage sensor 180 and feedback control circuit 140.Power supply changeover device 120 is with input ac voltage V
InConvert output dc voltage V to
OutWith output DC stream I
Out, to drive light emitting diode illuminating apparatus (not shown).Input voltage sensor 180 is connected in the input of power supply changeover device 120, in order to the variation of the input voltage of detecting power supply changeover device 120 and export a detecting input voltage.Wherein, input ac voltage V
InExcursion can be for example 110-277V
Ac Feedback control circuit 140 is connected to the output of power supply changeover device 120, with the detecting power supply changeover device 120 output voltage and produce one the detecting output voltage.Feedback control circuit 140 also is connected to a control end (not shown) of input voltage sensor 180 and power supply changeover device 120, it produces a dimming control signal according to detecting output voltage and detecting input voltage, and export this dimming control signal to the control end of power supply changeover device 120, control switching over of power supply changeover device 120 with output voltage or the output current of adjustment power supply changeover device 120 with this, to reach the function of the brightness of adjusting light emitting diode illuminating apparatus.
In some embodiment, as shown in Figure 3, the input voltage sensor 180 of voltage induced formula dimming control system 10 can also comprise a voltage decoder (voltage decoder) 190, it is used for input voltage is decoded in first voltage range and second voltage scope change number of times between the two, with when this input voltage change number of times that both ask in first voltage range and second voltage scope reaches a specific times in a setting-up time, the detecting input voltage of output correspondence is to feedback control circuit 140, make dimming control signal corresponding to feedback control circuit 140 outputs to the control end of power supply changeover device 120, control switching over of power supply changeover device 120 with output voltage or the output current of adjustment power supply changeover device 120 with this, to reach the function of the brightness of adjusting light emitting diode illuminating apparatus.By the setting of voltage decoder 190, can avoid voltage induced formula dimming control system 10 to produce misoperation because of the unsteady variation of input voltage.
Certainly, the annexation of the circuit in the voltage induced formula dimming control system and be not limited to as shown in Figure 2 as flowing mode, in some embodiment, as shown in Figure 4, voltage-sensor 180 also can be interior independent by power circuit 100, and consist of voltage induced formula dimming control system 10 with power circuit 100, wherein input voltage sensor 180 is electrically connected with the input of power supply changeover device 120 and the control end of power supply changeover device 120, in order to the variation of the input voltage of detecting power supply changeover device 120 and export a dim signal V
DimControl end to power supply changeover device 120, in addition, 140 of feedback control circuits only are connected with output and a control end of power supply changeover device 120, it produces a feedback signal according to detecting power supply changeover device 120 output voltages, and export this feedback signal to the control end of power supply changeover device 120, thus, the controller of power supply changeover device 120 is just according to this dim signal V
DimAnd this feedback signal and control the switching over of power supply changeover device 120, adjust the output voltage of power supply changeover device 120 with this, to reach the function of the brightness of adjusting light emitting diode illuminating apparatus, in addition, as dim signal V
DimThe reaction input voltage is when changing in first voltage range, and it is first to decide voltage that power supply changeover device 120 switches the output voltage that makes power supply changeover device 120 by control switch; And as dim signal V
DimWhen input voltage changed in the second voltage scope, power supply changeover device 120 switched by control switch so that the output current of power supply changeover device 120 is second to decide voltage, thus, just kept power supply changeover device 120 and was output as and decides voltage.Certainly above-described embodiment also can increase output current sensor 160 as shown in Figure 1, reaches power supply changeover device 120 with this and is output as and decides electric current, repeats no more in this.In above-described embodiment, dim signal V
DimMagnitude of voltage can be but be not limited to be set in 0～10V change, in addition, also can be but be not limited to a pulse width modulation signal.
In other embodiment, power circuit 100 shown in Figure 4 also can comprise output current sensor 160 as shown in Figure 1, also namely as shown in Figure 5, current sensor 160 is connected in output and the feedback control circuit 140 of power supply changeover device 120, in order to the variation of the output current of detecting power supply changeover device 120 and export a detecting output current, make feedback control circuit 140 produce a feedback signal according to this detecting output current, and export this feedback signal to the control end of power supply changeover device 120, thus, the controller of power supply changeover device 120 is just according to this dim signal V
DimAnd this feedback signal and control the switching over of power supply changeover device 120, adjust the output current of power supply changeover device 120 with this, to reach the function of the brightness of adjusting light emitting diode illuminating apparatus, in addition, as dim signal V
DimThe reaction input voltage is when changing in first voltage range, and it is first to decide electric current that power supply changeover device 120 switches the output current that makes power supply changeover device 120 by control switch; And as dim signal V
DimWhen input voltage changed in the second voltage scope, power supply changeover device 120 switched by control switch so that the output current of power supply changeover device 120 is second to decide electric current.
Below will and cooperate Fig. 1-5 to illustrate that exemplarily the present invention is used for controlling the method for the brightness of lighting device with Fig. 6, as shown in Figure 6, at first, execution in step S1, namely utilize feedback control circuit 140 to detect output current or the output voltage of power supply changeover device 120, control the running of power supply changeover device 120 with this, the output current of power supply changeover device 120 or output voltage are maintained to be decided electric current or decides voltage, then, execution in step S2, the variation of the input voltage that namely receives by input voltage sensor 180 detecting power supply changeover devices 120, last execution in step S3, when namely changing in different voltage ranges according to input voltage, export the different output voltages of deciding voltage or the different output current of deciding electric current to lighting device.
Certainly, in other embodiment, as shown in Figure 7, in step S3, also can utilize voltage decoder for example shown in Figure 3 190 and input voltage is changed number of times in different voltage ranges and decode, when in a setting-up time, reaching a specific times in different voltage ranges, to change number of times when input voltage, export the different output voltages of deciding voltage or the different output current of deciding electric current to lighting device.
Comprehensively above-mentioned, the present invention proposes a kind of voltage induced formula dimming control system and control method thereof, in order to control the brightness of light emitting diode illuminating apparatus.When voltage induced formula dimming control system of the present invention can allow the input ac voltage of power supply unit of light emitting diode illuminating apparatus change in different voltage ranges, export different deciding voltage or decide electric current to light emitting diode illuminating apparatus, control the brightness of light emitting diode illuminating apparatus and reach the function of the brightness of adjusting light emitting diode illuminating apparatus with this.Therefore, voltage induced formula dimming control system of the present invention can utilize the power supply circuit framework of existing street lamp and need not to increase light adjusting controller and can realize dimming function, and can reach at lower cost simple circuit just reach energy-conservation with prolong the lighting device effect in useful life.
The present invention can be thought and is to modify right neither taking off such as Protector that attached claim is wanted as all by the personage Ren Shi craftsman who has the knack of this technology.
Claims (10)
1. a voltage induced formula dimming control system in order to control the brightness of a lighting device, is characterized in that, this system comprises:
One power circuit comprises:
One power supply changeover device is in order to this lighting device of power drives;
One output current sensor is connected to an output of this power supply changeover device, and its output current of detecting this power supply changeover device is to produce a detecting output current;
One input voltage sensor is connected to an input of this power supply changeover device, and its input voltage of detecting this power supply changeover device is to produce a detecting input voltage; And
One feedback control circuit, be connected to a control end of this output current sensor, this input voltage sensor and this power supply changeover device, it is according to this detecting output current and should detect input voltage, export a dimming control signal to control the switching over of this power supply changeover device, adjust the output current of this power supply changeover device with this;
Wherein this feedback control circuit is when this input voltage when this power supply changeover device changes in a first voltage range, output has this dimming control signal of one first state to control the switching over of this power supply changeover device, so that this output current of this power supply changeover device is one first to decide electric current, and at this feedback control circuit when this input voltage when this power supply changeover device changes in a second voltage scope, this dimming control signal that output has one second state to be controlling the switching over of this power supply changeover device, so that this output current of this power supply changeover device is one second to decide electric current.
2. voltage induced formula dimming control system as claimed in claim 1, it is characterized in that, this input voltage sensor also comprises a voltage decoder, with to input voltage at this first voltage range and this second voltage scope change between the two time number decoder, and when input voltage when this first voltage range and this second voltage scope change number of times between the two reach a specific times in a setting-up time, this detecting input voltage that output is corresponding.
3. a voltage induced formula dimming control system in order to control the brightness of a lighting device, is characterized in that, this system comprises:
One power circuit comprises:
One power supply changeover device is in order to this lighting device of power drives;
One input voltage sensor is connected to an input of this power supply changeover device, and its input voltage of detecting this power supply changeover device is to produce a detecting input voltage; And
One feedback control circuit, be connected to an output of this power supply changeover device, detect output voltage with the output voltage of detecting this power supply changeover device to produce one, and this feedback control circuit is connected to a control end of this input voltage sensor and this power supply changeover device, it is according to this detecting output voltage and should detect input voltage, export a dimming control signal to control the switching over of this power supply changeover device, adjust the output voltage of this power supply changeover device with this;
Wherein this feedback control circuit is when this input voltage when this power supply changeover device changes in a first voltage range, output has this dimming control signal of one first state to control the switching over of this power supply changeover device, so that this output voltage of this power supply changeover device is one first to decide voltage, and at this feedback control circuit when this input voltage when this power supply changeover device changes in a second voltage scope, this dimming control signal that output has one second state to be controlling the switching over of this power supply changeover device, so that this output voltage of this power supply changeover device is one second to decide voltage.
4. voltage induced formula dimming control system as claimed in claim 3, it is characterized in that, this input voltage sensor also comprises a voltage decoder, with to input voltage at this first voltage range and this second voltage scope change between the two time number decoder, and when input voltage when this first voltage range and this second voltage scope change number of times between the two reach a specific times in a setting-up time, this detecting input voltage that output is corresponding.
5. a voltage induced formula dimming control system in order to control the brightness of a lighting device, is characterized in that, this system comprises:
One power circuit comprises:
One power supply changeover device is in order to this lighting device of power drives; And
One feedback control circuit is connected to an output and a control end of this power supply changeover device, producing a feedback signal, and exports this feedback signal to this control end of this power supply changeover device with the output voltage of detecting this power supply changeover device; And
One input voltage sensor, be connected to an input and this control end of this power supply changeover device, its input voltage of detecting this power supply changeover device is to produce a dim signal to this control end of this power supply changeover device, what make this power supply changeover device controls the switching over of this power supply changeover device according to this dim signal and this feedback signal, to adjust the output voltage of this power supply changeover device;
Wherein this input voltage when this power supply changeover device changes in a first voltage range, this power supply changeover device is according to this dim signal and this feedback signal and to export this output voltage be one first to decide voltage, when this input voltage of this power supply changeover device changes in a second voltage scope, this power supply changeover device is according to this dim signal and this feedback signal and to export this output voltage be one second to decide voltage.
6. voltage induced formula dimming control system as claimed in claim 5, it is characterized in that, this input voltage sensor also comprises a voltage decoder, with to input voltage at this first voltage range and this second voltage scope change between the two time number decoder, and when input voltage when this first voltage range and this second voltage scope change number of times between the two reach a specific times in a setting-up time, this dim signal that output is corresponding.
7. a voltage induced formula dimming control system in order to control the brightness of a lighting device, is characterized in that, this system comprises:
One power circuit comprises:
One power supply changeover device is in order to this lighting device of power drives;
One output current sensor is connected to an output of this power supply changeover device, and its output current of detecting this power supply changeover device is to produce a detecting output current; And
One feedback control circuit is connected to a control end of this output current sensor and this power supply changeover device, and it producing a feedback signal, and exports this feedback signal to this control end of this power supply changeover device according to this detecting output current; And
One input voltage sensor, be connected to an input and this control end of this power supply changeover device, its input voltage of detecting this power supply changeover device is to produce a dim signal to this control end of this power supply changeover device, make this power supply changeover device control the switching over of this power supply changeover device according to this dim signal and this feedback signal, to adjust the output voltage of this power supply changeover device;
Wherein this input voltage when this power supply changeover device changes in a first voltage range, this power supply changeover device is according to this dim signal and this feedback signal and to export this output current be one first to decide electric current, when this input voltage of this power supply changeover device changes in a second voltage scope, this power supply changeover device is according to this dim signal and this feedback signal and to export this output current be one second to decide voltage.
8. voltage induced formula dimming control system as claimed in claim 7, it is characterized in that, this input voltage sensor also comprises a voltage decoder, with to input voltage at this first voltage range and this second voltage scope change between the two time number decoder, and when input voltage when this first voltage range and this second voltage scope change number of times between the two reach a specific times in a setting-up time, this dim signal that output is corresponding.
9. a voltage induced formula dimming controlling method in order to control the brightness of a lighting device, is characterized in that, this lighting device is by the power supply changeover device power supply of a power circuit, and the method comprises the following step:
(a) detect output voltage or the output current of this power supply changeover device, be maintained at the output voltage of control power supply changeover device or output current and decide voltage or decide electric current;
(b) detect the variation of the input voltage that this power supply changeover device receives; And
When (c) changing in different voltage ranges according to input voltage, export the different output voltages of deciding voltage or the different output current of deciding electric current to this lighting device.
10. voltage induced formula dimming controlling method as claimed in claim 9, it is characterized in that, in step (c), also input voltage being changed number of times in different voltage ranges decodes, when in a setting-up time, reaching a specific times in different voltage ranges, to change number of times when input voltage, export the different output voltages of deciding voltage or the different output current of deciding electric current to this lighting device.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582141A (en) * | 2014-12-12 | 2015-04-29 | 骆武宁 | Centralized dimming control method of lighting system |
| CN104582142A (en) * | 2014-12-12 | 2015-04-29 | 骆武宁 | Unlimited dimming control method of lighting syste |
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